Ciric, D.G., Peric, Z.H., Milenkovic, M. and Vucic, N.J. 2022. Evaluating Similarity of Spectrogram-like Images of DC Motor Sounds by Pearson Correlation Coefficient. Elektronika ir Elektrotechnika. 28, 3 (Jun. 2022), 37-44. DOI:https://doi.org/10.5755/j02.eie.31041.